I just received the following error when I trying to open a cube in the designer view. This is most likely due to the fact that I was reorganizing my measure groups and there must be a duplicate measure somewhere.
How can I re-open the cube designer? I can see the DSV.
I managed to solve the issue by right clicking on the .cube project and opening View Code.
I made sure that the measures had different names and saved the cube project.
<Name>Measure name</Name>
The error message disappeared and I can finally use the cube designer again.